Bump serde from 1.0.210 to 1.0.211 in /data/render

Bumps [serde](https://github.com/serde-rs/serde) from 1.0.210 to 1.0.211.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](serde-rs/serde@v1.0.210...v1.0.211)

---
updated-dependencies:
- dependency-name: serde
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

data/render/Cargo.toml

@@ -5,7 +5,7 @@ authors = ["Matthias Endler <matthias-endler@gmx.net>"]
 edition = "2018"
 
 [dependencies]
-serde = "1.0.210"
+serde = "1.0.211"
 serde_derive = "1.0.136"
 serde_yaml = "0.9.34"
 askama = "0.12.1"